Strainer-belt.



C. EDGERTON. lSTEAINER BELT.

` APPLICATION FILED SEPT. 30, i902. N0 MODEL.

, ATTORNEYS;

PATBNTED MAY 26, 1903.

2 SHEETS-'SHEET 1.

No. 729,296. A PTENTBD MAY 26, 1203, 0.EDGERT0N.

STRAINER BELT.

i APPLICATION FILED SEPT. 30, 1902. NO MODEL.

l l v ATTORNEYS,

2 snnnTssmnT 2.

.Patented May 26, i903.

CHARLEs EnGEa'roN, 0E PHILADELPHIA, PENNSYLVANIA.

sTRiNER-BELT'.

SPECIFICATION forming part of To all whom it may concern..-

. Be it'known that I, CHARLES EDGERTON, of.

Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Strainer- Belts, of which the following is a speci'iication.

In the apparatus patented by me February 15, 1898, No. 599,229, and May 10, 1898, No, 603,945, for treating garbage and continuonsly pressing the liquids from the solids I employed a series of rolls and an endless conveyer or belt passing between the rolls, which belt was specially constructed of textilematerial or steel slats, through which the liquids 'were allowed to strain,V as through a filter.

My present invention consists in an irnproved construction of such endless conveyer` belt constructed to act as a continuous strainer to separate the liquids from the solids .and to resist the compressive strain of the rollers thereupon, in combination with a spe.

cial construction of roller adapted to receive the chain-links which form a part of the strainer-belt, as will be hereinafter more fully described with reference to the'drawings, in

whichl Figure 1 is a plan view of 'a portion of my improved strainer-belt. Fig. 2 is a section taken crosswise the belt and longitudinally through the` axis of the rollers. Figs. 3 and 4 are enlarged detail views of one of the connecting-chains which couple the slats of the belt, Fig. 3 being a plan and Fig. 4. a side view-of said chain; and Fig. 5 is a detail of a modification. y

In my present invention I use a steel slat A, three inches wide by three feet long and one-quarter of an inch thick, fixed to chains B, so that the slats will itclosely at the edges withoutinterfering with each o-ther, and these slats are drilled full of small closely-juxta-` posed holes to form a practically continuous traveling strainer-surface. This in connection with the rollers gives an eective straining-surface which separates the liquids from the Iibrous solids and also is able to stand the severe work of pressing garbage with all its accompanying refractory substances, which under the stress of the pressure-rollers imposes a great strain on the belt.

The chains B arel three in number, and they ceigsist (see Figs. 3 and/i) of links b, con- Leaefs Patent No. 729,296, dated may 2e, 190s.. Application filed September 30.1902. Serial No. 125,439. (No model.)

nected together by hinge-pins b', the links being formedwith iianges or faces b2, to which the slats A are fastened by means of rivets b3 passing through holes b4 in the ianges Vof the links. This endless belt passes through between the pressing-rolls, the upper one of which is shown in Fig. 2 in dotted lines only. The lower roll is made in sections C C with three transverse grooves or recesses c to receive the chains of the belt and a"ow the slats to pass between the rollers with a flat bearing on the rolls both at the upper and lower surfaces, so as to resist the compression strain. These chains must take a bearing on the bottoms or else the slats will bend at this point from the pressure above. Now the surface speed of the roll at the bottom of these grooves or recesses c is less rapid than that at the outer peripheral surface o f the roller, and as the slats and chains are rigidly connected as against any longitudinal take-up there must be some differentiation between the bearing of the slats on the rolls and the bearing of the chains, so as to allow some slippage between them. This is provided for by making the rolls in sections C and C and supplying a swiveling` or rotary adjustable collar C2 between them, which movable collar C2 takes the bearing of the chains, while the slats take a bearing on the outer periphery of the rolls. These collars have an independent swiveling movement on sleeves C3, carried by the roller-shaft S, to suit the travel of the inner edge of the chain, and thus form a compensating arrangement that avoids sliding friction and wear and reduces'the amount of power required to drive the belt. 'Instead of forming the rolls'in section, as in Fig. 2, the roller may be in one piece grooved transversely, as seen in Fig. 5, and a swiveling sectional collar O4may be arranged in the grooves, so as to take the bearing of the chains and have an independent rotary compensating movement. 1i

Having thus de. cribed my invention, what.

I claim as new, and desire to secure by Letters Patent, is A 1. Atraveling strainer-beltfor iiltering or straining under pressure, consisting of transverse slats and chains connecting the4 slats and projecting on one side of the belt, combined with rollers havin-g swivelin g collars lo'vv IOO cated in the plane of the chains to take up differential movementv substantially as described.

2. A traveling strainerbelt for filtering or straining under pressure, consisting of transverse slats, and chains connecting the slats and projecting on one side of the belt, com bined4 with rollers made in sections -with grooves or recesses between the sections and freely-swiveling collars Aat the bottoms of the grooves substantially as and for the purpose described.

3. A traveling strainer-belt for filtering or straining under pressure, consisting of transverse slats, and chai'ns connecting the slats and projecting' on one side of the belt combined with rollers having grooves to receive the chains and a rotary compensating bearing at the bottoms of the grooves substantially as and for the purpose described.

CHARLES EDGERTON. Witnesses:

C. PFEIFFER, J r., CLIFTON C. DUNKEL. 

